100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/* Copyright (C) 2012 mbed.org, MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish, distribute,
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* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "TCPSocketServer.h"
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TCPSocketServer::TCPSocketServer() {}
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// Server initialization
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int TCPSocketServer::bind(int port)
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{
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if (_sock_fd < 0) {
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_sock_fd = eth->new_socket();
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if (_sock_fd < 0) {
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return -1;
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}
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}
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// set the listen_port for next connection.
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listen_port = port;
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// set TCP protocol
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eth->setProtocol(_sock_fd, TCP);
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// set local port
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eth->sreg<uint16_t>(_sock_fd, Sn_PORT, port);
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// connect the network
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eth->scmd(_sock_fd, OPEN);
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return 0;
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}
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int TCPSocketServer::listen(int backlog)
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{
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if (_sock_fd < 0) {
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return -1;
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}
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if (backlog != 1) {
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return -1;
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}
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eth->scmd(_sock_fd, LISTEN);
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return 0;
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}
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int TCPSocketServer::accept(TCPSocketConnection& connection)
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{
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if (_sock_fd < 0) {
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return -1;
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}
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Timer t;
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t.reset();
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t.start();
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while(1) {
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if (t.read_ms() > _timeout && _blocking == false) {
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return -1;
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}
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if (eth->sreg<uint8_t>(_sock_fd, Sn_SR) == SOCK_ESTABLISHED) {
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break;
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}
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}
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uint32_t ip = eth->sreg<uint32_t>(_sock_fd, Sn_DIPR);
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char host[16];
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snprintf(host, sizeof(host), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
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uint16_t port = eth->sreg<uint16_t>(_sock_fd, Sn_DPORT);
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// change this server socket to connection socket.
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connection._sock_fd = _sock_fd;
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connection._is_connected = true;
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connection.set_address(host, port);
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// and then, for the next connection, server socket should be assigned new one.
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_sock_fd = -1; // want to assign new available _sock_fd.
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if(bind(listen_port) < 0) {
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// modified by Patrick Pollet
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error("No more socket for listening, bind error");
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return -1;
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} else {
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//return -1;
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if(listen(1) < 0) {
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// modified by Patrick Pollet
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error("No more socket for listening, listen error");
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return -1;
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}
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}
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return 0;
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}
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